When just vanilla won’t do, how about a blueberry pie Oreo?

The New York Times — Written by Maya Salam — Image courtesy of Tony Cenicola/The New York Times

Someone once said: If it isn’t broke, don’t fix it. That person does not work for Oreo.

Oreo makes a lot of cookies — 40 billion of them in 18 countries each year — enough to make it the world’s best-selling cookie. Most of them are the familiar sandwich that’s over 100 years old: white cream nestled between two chocolate wafers. But the company has increasingly been experimenting with limited-edition flavors that seemed designed as much for an Instagram feed as they are to be eaten.

But outside that classic Oreo? Oh, there is much messing about. This year, the company released limited-edition flavors like Jelly Donut, Mississippi Mud Pie and Firework. They joined a packed shelf that has recently included flavors like Cookie Dough, Birthday Cake, Mint, S’Mores and Red Velvet, which proved so popular as a limited edition that the company upgraded it to everyday flavor status.